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4 SheetsShe et 1.

(N0 Model.)

G. SCHWABE. SHUTTLE BOX OPERATING MECHANISM FOR LOOMS. No. 604,669.

Paten ed May 24,1898.

lnfgzziar 7% (No Model.) 4 Sheets-Sheet 2 G. SGHWABE. SHUTTLE BOX OPERATING MECHANISM FOR LOOMS.

No. 604,669. Patented May 24,1898

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4 Sheets-Sheet 3.

(No Model.)

G. SGHWABE. SEUTTLE BOX OPERATING MECHANISM FOR LOOMS.

Patented May 24 lrwenior- 4 Sheets-Sheet 4.

(No Model.)

G. SGHWABE. SHUTTLE BOX OPERATING MECHANISM FOR LOOMS.

No. 604,669. Patented May 24,1898.

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GEORG SOHVABE, OF BIALA, AUSTRIA-HUN GARY.

SPECIFICATION forming part of Letters Patent No. 604,669, dated May 2%, 1898. Application filed April 27, 1897. erial No. 634,125. (No model.) Patented in England December 20, 1894, No. 24,794,

To whom, it may concern:

Be it known that I, GEORG SGHWABE, a

subject of the Emperor of Austria-Hungary,

residing at Biala, in the Empire of Austria- Hungary, have invented new and useful Improvements in Shuttle-l3ox-Operating Mechanism for Looms, (which has been patented in England, No. 245,794, December 20, 1894,) of which the following is a specification.

Power'looms with shuttle-box-changin g devices do not generally attain the speed and capacity of production that are possible with looms without multiple shuttles. In particular those looms having arrangements for more than a quadruple change and with rising and falling boxes are limited in their speed, because a greater number of boxes necessitate so complex a construction that all the main requirements of a change of shuttles, such as uniform motion free from shocks, and absolutely reliable rising and falling of the boxes with a minimum expenditure of power, can generally not be simultaneously obtained.

The present invention relates to an im proved shuttle-changing apparatus for multiple (eightfold) changes which fulfils all the required conditions in so complete a manner that the capacity of production and speed of such looms are nearlyequal to those of looms without change of shuttles. The said apparatus is so arranged that all the moving parts, from the cranks or eccentrics situated side by side on the driving-shaft to the shuttleboxes themselves, are in perfectly close connection, whereby the raising or lowering of the shuttle-boxes can be effected in a perfectly easy and reliable manner. The end positions of the separateboxes or cells are determined by the end positions of the cranks or eccentrics, in which positions (dead-centers) every pressure produced is taken by the rigid shaft. For preventing inaccuracies in the different vertical motions an arrangement is provided whereby the raising devices only receive so small a stroke that the are described by the same hardly differs perceptibly from a straight line, and that consequently at the end positions of the corresponding levers no inequalities of the stroke can be produced by relative shortening. In order to avoid the action of the momentum of the masses in motion at high speeds of the loom, as also the wear of the moving parts, the weight of the shuttle-box and carrier is entirely balanced both in the rising and the falling motion by means of a helical. spring connected to the carrier.

I will describe the said invention with reference to the accompanying drawings, in which on Sheets I to IV is shown the construction for six positions, while Sheets Vto VIII show diagrammatic views for eight, five, and four positions of the multiple apparatus.

Figure 1 shows a front view, Figs. 2 and 3 section and side view, Figs. eand 5 enlarged sectional plans, and Fig. 6 a full-sized diagram for six positions. Figs. 7 to 14 show diagrams of the arrangement for eight shuttle positions. Figs. 15 to 19 show diagrams of the arrangement for five shuttle positions, and Figs. 20 to 23 show diagrams of the arrangements for four shuttle positions.

The crankshaft a of the power-loom drives, by means of bevel-gear, a short shaft a, having a crank I), which moves the lever d, fixed to the shaft 6, Figs. 7and 3, which lever imparts an up and down motion by means of the rods f to the knife-bars g g. The patternchain h, Fig. 2, brings, aceording to whether it presents a socket or a roller, the verticallyarranged platens 7c k with their beaks t' z" i in front of the knife-bars g g, which lay hold of them and carry them along. The teeth of each platen take into a corresponding toothed segment Z Z Z The latter are situated loose side by side upon a fixed bolt m, on which they can turn.

The toothed segmentl carries a circular eccentric m, cast thereon, which carries an eccentric-strap r and is guided at the point 0 by the lever-arm p, pivoted on the fixed pin y. In like manner the toothed segment l carries an eccentric m, cast thereon, which has an eccentric-strap r and is guided at 0' by the lever s, which is pivoted to the pin q, carried by the first lever 19. Also the toothed segment Z has a crank m which is connected by the rod n to the pin 0 on the lever 75, which is pivoted to a pin 1 on the second lever s.

From the pin 0 of lever 25 the rod u passes to the pin 0 on the shuttle-box carrier 12, which is rigidly connected to the shuttle-box w. Each toothed segment has a small groove for the reception of a brakestrap, which only most vertically one above the other.

- By reducing the stroke of the crank m two has the object to prevent any overrunning of the toothed platens k 71: during the motion.

On the shuttle-box carrier 4; is a short 1ever-arm, with which is connected the spring Z, the other end of which is connected to the loom-frame.

According as the toothed platen 70, Figs. 1 and 2, is moved up or down by the reciprocating knife-bars g g the toothed segment Z, with its eccentric m, receives a semirotation either in the upward or the downward direction.

The eccentric-strap 0", which is guided at 0, rises or falls and with it the lever 19, pivoted to the pin 1 Consequently the pin q, serving as pivot to lever s, also rises and falls.

According as the second toothed platen 7c is moved up or down by the reciprocating knife-bars g g the second toothed segment Z and its eccentric m receive a semirotation in an upward or downward direction and the strap 4", which is guided at 0 rises and falls, as does also the second lever s, pivoted to the pin (1.

According as the third toothed platen k is moved up or down by the reciprocating knifebars g g the third toothed segment Z receives a semirotation in an upward or downward direction, while its crank m receives a horizontal to or fro motion, as does also, by means of the rod 01, the third lever 25, which is pivoted to the pin q. As now in consequence of the up-and-down motion of the two levers p and s, as also of the pivot q, the point q receives four different positions in a vertical direction, which are imparted to the lever t, pivoted at q and having a horizontal to-and-fro motion, the point 0 will receive eight different positions, which are situated in a figure similar to a rectangle. These eight positions appear at the point 0 of the elbow-lever If as eight perfectly equal different vertical positions, which are situated al- The elbow-levert consequently imparts, by means of the connecting-rod u, to the point o of lever 1), and consequently also to the shuttlebox, eight perfectly equal different vertical positions.

By suitably determining the stroke of the two eccentrics m m the pivot q of lever s can in like manner receive only three positions in the Vertical direction instead of four, which then give, in conjunction with the elbow-lever t at the point 0 six equal vertical positions,

"so as to impart SlX corresponding positions to a six-cell shuttle-box, as indicated at Fig. 6.

other positions in Figs. 15 and 16 will be made to coincide, thus producing a middle position, so that the elbow-lever i will have at point 0 five accurately equal vertical positions, as

positions in vertical direction can be reduced to two, so that the point 0 of the lever i will then only receive four accurately equal vertical positions, in which case the stroke of the eccentric m is equal to zero, as indicated at Figs. 20 to 23.

All the movements of the eccentrics and cranks are closed, and are consequently definitely-prescribed motions, and the end positions are accurately fixed by the dead-centers thereof at each perfect semirevolution.

Having now particularly described and ascertained the nature of mysaid invention and in what manner the same is to be performed, I declare that what I claim is 1. In shuttle-boX-operatin g mechanism, the combination with the shuttle-boxes, of a lifting and depressing lever connected therewith and pivoted at a fixed point, a second pivoted lever connected to the lifting and depressing lever,and pattern-controlled devices for shift-' ing the pivotal point of said second lever and for swinging it upon its pivot, substantially as described.

2. In shuttle-boX-operatin g mechanism, the combination with the shuttle-boxes and their carrier, of a lever connected with the carrier and pivoted at a fixed point, mechanism for swinging the lever upon its pivot, an eccentric, connections between the eccentric and the pivot of the lever, and pattern-controlled devices for rotating the eccentric and for operating the swinging mechanism of the lever, substantially as described.

3. In shuttle-boX-operating mechanism,the combination with the shuttle-boxes and their carrier, of a lever having a pivot adapted to be moved in different planes, connections between said lever and the shuttle-box carrier, a second lever having a fixed pivotal point, a third lever pivoted to the said second lever and connected to the pivot of the first-mentioned lever, and pattern-controlled devices for swinging any one or more of the three levers upon their pivots, substantially as described.

4. In shuttle-box-operating n1echanism,the combination with the shuttle-boxes and their carrier, a lever having a pivot adapted to be moved in different planes, connections between said lever and the shuttle-box carrier, a second lever connected with the pivot of the first,said second lever likewise having a pivot adapted to be moved in different planes, means for shifting said pivotal point, and pattern-controlled devices for swinging one or both of the levers upon their pivots, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORG SOIIVVABE.

Witnesses:

ANTON BUDsIKIEWIoZ, CARL SCHMIDT. 

